Lego Technic ˈtɛknᵻk is a line of Lego interconnecting plastic rods and parts. The purpose of this series is to create advanced models of working vehicles and machines, compared to the simpler brick-building properties of normal Lego.
The concept was introduced as the Expert Builder series and originally Technical Sets in 1977, and was renamed Technic in 1982.
Technic sets are characterized by their use of special pieces, such as gears, axles, and pins, which allow the construction of working mechanisms and mechanical structures. Other special pieces include beams and plates with holes in them, through which the axles could be installed. Some sets also come with pneumatic pieces or electric motors. In recent years, Technic pieces have begun filtering down into other Lego sets as well, including the BIONICLE sets (which were once sold as part of the Technic line), as well as a great many others.
The style of Lego Technic sets has been changing over time. Technic sets produced since the year 2000 use a different construction method, described as "studless construction". (Studs are the small circular knobs which appear on traditional Lego bricks.) This method utilises beams and pins rather than Technic bricks.
Mindstorms, a Lego line of robotic products, also uses many Technic pieces, although it is sold as a separate line of products. The latest generation of the Mindstorms range, the Robot Inventor (released October 2020), as well as its predecessors the Mindstorms EV3 (released September 2013) and the Mindstorms NXT (released August 2006), are based on the studless construction method.
In June 2023, The Lego Group built a life-size replica of the PEUGEOT 9x8 24H Le Mans Hybrid Hypercar containing 626,392 Lego pieces.
The Lego Technic system expands on the normal Lego bricks with a whole range of new bricks that offer new function and building styles. The most significant change from normal Lego is that single-stud wide bricks ('beams') have circular holes through their vertical face.